石灰的活性度及微观结构研究  

Study on the Activity and Microstructure of Lime

作　　者：郝素菊 任倩倩[2] 张玉柱[1,2] 蒋武锋 郝华强[2] 薄荷 董建君[3] HAO Su-ju REN Qian-qian ZHANG Yu-zhu JIANG Wu-feng HAO Hua-qiang BO He DONG Jian-jun(College of Metallurgy ＆ Energy, North China University of Science and Technology, Tangshan, Hebei 063009, China School of Metallurgy, Northeastern University, Shenyang, Liaoning 110819, China Tangshan Vocational College of Science and Technology, Tangshan, Hebei 063009, China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063009 [2]东北大学冶金学院,辽宁沈阳110004 [3]唐山科技职业技术学院,河北唐山063001

出　　处：《过程工程学报》2017年第1期151-155,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:51174075;51274084);河北省自然科学基金资助项目(编号:E2012209024;E2014209157)

摘　　要：采用场发射扫描电镜和全自动压汞仪研究了石灰的晶粒大小、比表面积、孔隙等微观结构,考察了煅烧时间、温度和压力对石灰活性度的影响规律,确定石灰微观结构与石灰活性度的关系.结果表明,随石灰的比表面积、平均孔径和孔容积增加,石灰活性度先增大后减小,石灰比表面积约为2.0 m2/g、平均孔径约为850 nm、孔容积约为0.58 m L/g时石灰活性度最高.The micro structure on the grain size, specific surface area and the pore structure of lime were analyzed by means of the field emission SEM and automatic pressure mercury, revealing the influence of calcination time, temperature and pressure on the activity of lime, determining the relationship between microstructure of lime and lime activity. The results showed that lime activity increases firstly and then decreases with the increasing of specific surface area, average pore diameter and pore volume of lime. When specific surface area is 2.0 m2/g around, the average pore size is about 850 nm, the hole volume is about 0.58 m L/g, the activity of lime is highest.

关 键 词：石灰 活性度 比表面积 平均孔径 孔容积 

分 类 号：TF702.5[冶金工程—钢铁冶金]